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OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / drivers / net / wireless / rtlwifi / base.c
blob30fc641385a591658b19c7d41010a786037aaa2a
1 /******************************************************************************
2 *
3 * Copyright(c) 2009-2010 Realtek Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * wlanfae <wlanfae@realtek.com>
23 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24 * Hsinchu 300, Taiwan.
25 *
26 * Larry Finger <Larry.Finger@lwfinger.net>
27 *
28 *****************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/ip.h>
33 #include <linux/module.h>
34 #include "wifi.h"
35 #include "rc.h"
36 #include "base.h"
37 #include "efuse.h"
38 #include "cam.h"
39 #include "ps.h"
40 #include "regd.h"
41
42 /*
43 *NOTICE!!!: This file will be very big, we hsould
44 *keep it clear under follwing roles:
45 *
46 *This file include follwing part, so, if you add new
47 *functions into this file, please check which part it
48 *should includes. or check if you should add new part
49 *for this file:
50 *
51 *1) mac80211 init functions
52 *2) tx information functions
53 *3) functions called by core.c
54 *4) wq & timer callback functions
55 *5) frame process functions
56 *6) IOT functions
57 *7) sysfs functions
58 *8) ...
59 */
60
61 /*********************************************************
62 *
63 * mac80211 init functions
64 *
65 *********************************************************/
66 static struct ieee80211_channel rtl_channeltable_2g[] = {
67 {.center_freq = 2412, .hw_value = 1,},
68 {.center_freq = 2417, .hw_value = 2,},
69 {.center_freq = 2422, .hw_value = 3,},
70 {.center_freq = 2427, .hw_value = 4,},
71 {.center_freq = 2432, .hw_value = 5,},
72 {.center_freq = 2437, .hw_value = 6,},
73 {.center_freq = 2442, .hw_value = 7,},
74 {.center_freq = 2447, .hw_value = 8,},
75 {.center_freq = 2452, .hw_value = 9,},
76 {.center_freq = 2457, .hw_value = 10,},
77 {.center_freq = 2462, .hw_value = 11,},
78 {.center_freq = 2467, .hw_value = 12,},
79 {.center_freq = 2472, .hw_value = 13,},
80 {.center_freq = 2484, .hw_value = 14,},
81 };
82
83 static struct ieee80211_channel rtl_channeltable_5g[] = {
84 {.center_freq = 5180, .hw_value = 36,},
85 {.center_freq = 5200, .hw_value = 40,},
86 {.center_freq = 5220, .hw_value = 44,},
87 {.center_freq = 5240, .hw_value = 48,},
88 {.center_freq = 5260, .hw_value = 52,},
89 {.center_freq = 5280, .hw_value = 56,},
90 {.center_freq = 5300, .hw_value = 60,},
91 {.center_freq = 5320, .hw_value = 64,},
92 {.center_freq = 5500, .hw_value = 100,},
93 {.center_freq = 5520, .hw_value = 104,},
94 {.center_freq = 5540, .hw_value = 108,},
95 {.center_freq = 5560, .hw_value = 112,},
96 {.center_freq = 5580, .hw_value = 116,},
97 {.center_freq = 5600, .hw_value = 120,},
98 {.center_freq = 5620, .hw_value = 124,},
99 {.center_freq = 5640, .hw_value = 128,},
100 {.center_freq = 5660, .hw_value = 132,},
101 {.center_freq = 5680, .hw_value = 136,},
102 {.center_freq = 5700, .hw_value = 140,},
103 {.center_freq = 5745, .hw_value = 149,},
104 {.center_freq = 5765, .hw_value = 153,},
105 {.center_freq = 5785, .hw_value = 157,},
106 {.center_freq = 5805, .hw_value = 161,},
107 {.center_freq = 5825, .hw_value = 165,},
108 };
109
110 static struct ieee80211_rate rtl_ratetable_2g[] = {
111 {.bitrate = 10, .hw_value = 0x00,},
112 {.bitrate = 20, .hw_value = 0x01,},
113 {.bitrate = 55, .hw_value = 0x02,},
114 {.bitrate = 110, .hw_value = 0x03,},
115 {.bitrate = 60, .hw_value = 0x04,},
116 {.bitrate = 90, .hw_value = 0x05,},
117 {.bitrate = 120, .hw_value = 0x06,},
118 {.bitrate = 180, .hw_value = 0x07,},
119 {.bitrate = 240, .hw_value = 0x08,},
120 {.bitrate = 360, .hw_value = 0x09,},
121 {.bitrate = 480, .hw_value = 0x0a,},
122 {.bitrate = 540, .hw_value = 0x0b,},
123 };
124
125 static struct ieee80211_rate rtl_ratetable_5g[] = {
126 {.bitrate = 60, .hw_value = 0x04,},
127 {.bitrate = 90, .hw_value = 0x05,},
128 {.bitrate = 120, .hw_value = 0x06,},
129 {.bitrate = 180, .hw_value = 0x07,},
130 {.bitrate = 240, .hw_value = 0x08,},
131 {.bitrate = 360, .hw_value = 0x09,},
132 {.bitrate = 480, .hw_value = 0x0a,},
133 {.bitrate = 540, .hw_value = 0x0b,},
134 };
135
136 static const struct ieee80211_supported_band rtl_band_2ghz = {
137 .band = IEEE80211_BAND_2GHZ,
138
139 .channels = rtl_channeltable_2g,
140 .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
141
142 .bitrates = rtl_ratetable_2g,
143 .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
144
145 .ht_cap = {0},
146 };
147
148 static struct ieee80211_supported_band rtl_band_5ghz = {
149 .band = IEEE80211_BAND_5GHZ,
150
151 .channels = rtl_channeltable_5g,
152 .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
153
154 .bitrates = rtl_ratetable_5g,
155 .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
156
157 .ht_cap = {0},
158 };
159
160 static const u8 tid_to_ac[] = {
161 2, /* IEEE80211_AC_BE */
162 3, /* IEEE80211_AC_BK */
163 3, /* IEEE80211_AC_BK */
164 2, /* IEEE80211_AC_BE */
165 1, /* IEEE80211_AC_VI */
166 1, /* IEEE80211_AC_VI */
167 0, /* IEEE80211_AC_VO */
168 0, /* IEEE80211_AC_VO */
169 };
170
171 u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid)
172 {
173 return tid_to_ac[tid];
174 }
175
176 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
177 struct ieee80211_sta_ht_cap *ht_cap)
178 {
179 struct rtl_priv *rtlpriv = rtl_priv(hw);
180 struct rtl_phy *rtlphy = &(rtlpriv->phy);
181
182 ht_cap->ht_supported = true;
183 ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
184 IEEE80211_HT_CAP_SGI_40 |
185 IEEE80211_HT_CAP_SGI_20 |
186 IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
187
188 if (rtlpriv->rtlhal.disable_amsdu_8k)
189 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
190
191 /*
192 *Maximum length of AMPDU that the STA can receive.
193 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
194 */
195 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
196
197 /*Minimum MPDU start spacing , */
198 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
199
200 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
201
202 /*
203 *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
204 *base on ant_num
205 *rx_mask: RX mask
206 *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
207 *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
208 *if rx_ant >=3 rx_mask[2]=0xff;
209 *if BW_40 rx_mask[4]=0x01;
210 *highest supported RX rate
211 */
212 if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
213
214 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n"));
215
216 ht_cap->mcs.rx_mask[0] = 0xFF;
217 ht_cap->mcs.rx_mask[1] = 0xFF;
218 ht_cap->mcs.rx_mask[4] = 0x01;
219
220 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
221 } else if (get_rf_type(rtlphy) == RF_1T1R) {
222
223 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T1R\n"));
224
225 ht_cap->mcs.rx_mask[0] = 0xFF;
226 ht_cap->mcs.rx_mask[1] = 0x00;
227 ht_cap->mcs.rx_mask[4] = 0x01;
228
229 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
230 }
231 }
232
233 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
234 {
235 struct rtl_priv *rtlpriv = rtl_priv(hw);
236 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
237 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
238 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
239 struct ieee80211_supported_band *sband;
240
241
242 if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
243 BAND_ON_BOTH) {
244 /* 1: 2.4 G bands */
245 /* <1> use mac->bands as mem for hw->wiphy->bands */
246 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
247
248 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
249 * to default value(1T1R) */
250 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
251 sizeof(struct ieee80211_supported_band));
252
253 /* <3> init ht cap base on ant_num */
254 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
255
256 /* <4> set mac->sband to wiphy->sband */
257 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
258
259 /* 2: 5 G bands */
260 /* <1> use mac->bands as mem for hw->wiphy->bands */
261 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
262
263 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
264 * to default value(1T1R) */
265 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
266 sizeof(struct ieee80211_supported_band));
267
268 /* <3> init ht cap base on ant_num */
269 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
270
271 /* <4> set mac->sband to wiphy->sband */
272 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
273 } else {
274 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
275 /* <1> use mac->bands as mem for hw->wiphy->bands */
276 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
277
278 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
279 * to default value(1T1R) */
280 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
281 &rtl_band_2ghz,
282 sizeof(struct ieee80211_supported_band));
283
284 /* <3> init ht cap base on ant_num */
285 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
286
287 /* <4> set mac->sband to wiphy->sband */
288 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
289 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
290 /* <1> use mac->bands as mem for hw->wiphy->bands */
291 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
292
293 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
294 * to default value(1T1R) */
295 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
296 &rtl_band_5ghz,
297 sizeof(struct ieee80211_supported_band));
298
299 /* <3> init ht cap base on ant_num */
300 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
301
302 /* <4> set mac->sband to wiphy->sband */
303 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
304 } else {
305 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
306 ("Err BAND %d\n",
307 rtlhal->current_bandtype));
308 }
309 }
310 /* <5> set hw caps */
311 hw->flags = IEEE80211_HW_SIGNAL_DBM |
312 IEEE80211_HW_RX_INCLUDES_FCS |
313 IEEE80211_HW_BEACON_FILTER |
314 IEEE80211_HW_AMPDU_AGGREGATION |
315 IEEE80211_HW_CONNECTION_MONITOR |
316 /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
317 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
318
319 /* swlps or hwlps has been set in diff chip in init_sw_vars */
320 if (rtlpriv->psc.swctrl_lps)
321 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
322 IEEE80211_HW_PS_NULLFUNC_STACK |
323 /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
324 0;
325
326 hw->wiphy->interface_modes =
327 BIT(NL80211_IFTYPE_AP) |
328 BIT(NL80211_IFTYPE_STATION) |
329 BIT(NL80211_IFTYPE_ADHOC);
330
331 hw->wiphy->rts_threshold = 2347;
332
333 hw->queues = AC_MAX;
334 hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
335
336 /* TODO: Correct this value for our hw */
337 /* TODO: define these hard code value */
338 hw->channel_change_time = 100;
339 hw->max_listen_interval = 10;
340 hw->max_rate_tries = 4;
341 /* hw->max_rates = 1; */
342 hw->sta_data_size = sizeof(struct rtl_sta_info);
343
344 /* <6> mac address */
345 if (is_valid_ether_addr(rtlefuse->dev_addr)) {
346 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
347 } else {
348 u8 rtlmac1[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
349 get_random_bytes((rtlmac1 + (ETH_ALEN - 1)), 1);
350 SET_IEEE80211_PERM_ADDR(hw, rtlmac1);
351 }
352
353 }
354
355 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
356 {
357 struct rtl_priv *rtlpriv = rtl_priv(hw);
358
359 /* <1> timer */
360 init_timer(&rtlpriv->works.watchdog_timer);
361 setup_timer(&rtlpriv->works.watchdog_timer,
362 rtl_watch_dog_timer_callback, (unsigned long)hw);
363
364 /* <2> work queue */
365 rtlpriv->works.hw = hw;
366 rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
367 INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
368 (void *)rtl_watchdog_wq_callback);
369 INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
370 (void *)rtl_ips_nic_off_wq_callback);
371 INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
372 (void *)rtl_swlps_wq_callback);
373 INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
374 (void *)rtl_swlps_rfon_wq_callback);
375
376 }
377
378 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
379 {
380 struct rtl_priv *rtlpriv = rtl_priv(hw);
381
382 del_timer_sync(&rtlpriv->works.watchdog_timer);
383
384 cancel_delayed_work(&rtlpriv->works.watchdog_wq);
385 cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
386 cancel_delayed_work(&rtlpriv->works.ps_work);
387 cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
388 }
389
390 void rtl_init_rfkill(struct ieee80211_hw *hw)
391 {
392 struct rtl_priv *rtlpriv = rtl_priv(hw);
393
394 bool radio_state;
395 bool blocked;
396 u8 valid = 0;
397
398 /*set init state to on */
399 rtlpriv->rfkill.rfkill_state = true;
400 wiphy_rfkill_set_hw_state(hw->wiphy, 0);
401
402 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
403
404 if (valid) {
405 pr_info("wireless switch is %s\n",
406 rtlpriv->rfkill.rfkill_state ? "on" : "off");
407
408 rtlpriv->rfkill.rfkill_state = radio_state;
409
410 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
411 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
412 }
413
414 wiphy_rfkill_start_polling(hw->wiphy);
415 }
416 EXPORT_SYMBOL(rtl_init_rfkill);
417
418 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
419 {
420 wiphy_rfkill_stop_polling(hw->wiphy);
421 }
422
423 int rtl_init_core(struct ieee80211_hw *hw)
424 {
425 struct rtl_priv *rtlpriv = rtl_priv(hw);
426 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
427
428 /* <1> init mac80211 */
429 _rtl_init_mac80211(hw);
430 rtlmac->hw = hw;
431
432 /* <2> rate control register */
433 hw->rate_control_algorithm = "rtl_rc";
434
435 /*
436 * <3> init CRDA must come after init
437 * mac80211 hw in _rtl_init_mac80211.
438 */
439 if (rtl_regd_init(hw, rtl_reg_notifier)) {
440 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
441 return 1;
442 } else {
443 /* CRDA regd hint must after init CRDA */
444 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
445 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
446 ("regulatory_hint fail\n"));
447 }
448 }
449
450 /* <4> locks */
451 mutex_init(&rtlpriv->locks.conf_mutex);
452 mutex_init(&rtlpriv->locks.ps_mutex);
453 spin_lock_init(&rtlpriv->locks.ips_lock);
454 spin_lock_init(&rtlpriv->locks.irq_th_lock);
455 spin_lock_init(&rtlpriv->locks.h2c_lock);
456 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
457 spin_lock_init(&rtlpriv->locks.rf_lock);
458 spin_lock_init(&rtlpriv->locks.waitq_lock);
459 spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
460
461 rtlmac->link_state = MAC80211_NOLINK;
462
463 /* <5> init deferred work */
464 _rtl_init_deferred_work(hw);
465
466 return 0;
467 }
468
469 void rtl_deinit_core(struct ieee80211_hw *hw)
470 {
471 }
472
473 void rtl_init_rx_config(struct ieee80211_hw *hw)
474 {
475 struct rtl_priv *rtlpriv = rtl_priv(hw);
476 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
477
478 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
479 }
480
481 /*********************************************************
482 *
483 * tx information functions
484 *
485 *********************************************************/
486 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
487 struct rtl_tcb_desc *tcb_desc,
488 struct ieee80211_tx_info *info)
489 {
490 struct rtl_priv *rtlpriv = rtl_priv(hw);
491 u8 rate_flag = info->control.rates[0].flags;
492
493 tcb_desc->use_shortpreamble = false;
494
495 /* 1M can only use Long Preamble. 11B spec */
496 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
497 return;
498 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
499 tcb_desc->use_shortpreamble = true;
500
501 return;
502 }
503
504 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
505 struct ieee80211_sta *sta,
506 struct rtl_tcb_desc *tcb_desc,
507 struct ieee80211_tx_info *info)
508 {
509 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
510 u8 rate_flag = info->control.rates[0].flags;
511 u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
512 tcb_desc->use_shortgi = false;
513
514 if (sta == NULL)
515 return;
516
517 sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
518 sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
519
520 if (!(sta->ht_cap.ht_supported))
521 return;
522
523 if (!sgi_40 && !sgi_20)
524 return;
525
526 if (mac->opmode == NL80211_IFTYPE_STATION)
527 bw_40 = mac->bw_40;
528 else if (mac->opmode == NL80211_IFTYPE_AP ||
529 mac->opmode == NL80211_IFTYPE_ADHOC)
530 bw_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
531
532 if (bw_40 && sgi_40)
533 tcb_desc->use_shortgi = true;
534 else if ((bw_40 == false) && sgi_20)
535 tcb_desc->use_shortgi = true;
536
537 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
538 tcb_desc->use_shortgi = false;
539 }
540
541 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
542 struct rtl_tcb_desc *tcb_desc,
543 struct ieee80211_tx_info *info)
544 {
545 struct rtl_priv *rtlpriv = rtl_priv(hw);
546 u8 rate_flag = info->control.rates[0].flags;
547
548 /* Common Settings */
549 tcb_desc->rts_stbc = false;
550 tcb_desc->cts_enable = false;
551 tcb_desc->rts_sc = 0;
552 tcb_desc->rts_bw = false;
553 tcb_desc->rts_use_shortpreamble = false;
554 tcb_desc->rts_use_shortgi = false;
555
556 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
557 /* Use CTS-to-SELF in protection mode. */
558 tcb_desc->rts_enable = true;
559 tcb_desc->cts_enable = true;
560 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
561 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
562 /* Use RTS-CTS in protection mode. */
563 tcb_desc->rts_enable = true;
564 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
565 }
566 }
567
568 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
569 struct ieee80211_sta *sta,
570 struct rtl_tcb_desc *tcb_desc)
571 {
572 struct rtl_priv *rtlpriv = rtl_priv(hw);
573 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
574 struct rtl_sta_info *sta_entry = NULL;
575 u8 ratr_index = 7;
576
577 if (sta) {
578 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
579 ratr_index = sta_entry->ratr_index;
580 }
581 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
582 if (mac->opmode == NL80211_IFTYPE_STATION) {
583 tcb_desc->ratr_index = 0;
584 } else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
585 if (tcb_desc->multicast || tcb_desc->broadcast) {
586 tcb_desc->hw_rate =
587 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
588 tcb_desc->use_driver_rate = 1;
589 } else {
590 /* TODO */
591 }
592 tcb_desc->ratr_index = ratr_index;
593 } else if (mac->opmode == NL80211_IFTYPE_AP) {
594 tcb_desc->ratr_index = ratr_index;
595 }
596 }
597
598 if (rtlpriv->dm.useramask) {
599 /* TODO we will differentiate adhoc and station futrue */
600 if (mac->opmode == NL80211_IFTYPE_STATION) {
601 tcb_desc->mac_id = 0;
602
603 if (mac->mode == WIRELESS_MODE_N_24G)
604 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
605 else if (mac->mode == WIRELESS_MODE_N_5G)
606 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
607 else if (mac->mode & WIRELESS_MODE_G)
608 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
609 else if (mac->mode & WIRELESS_MODE_B)
610 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
611 else if (mac->mode & WIRELESS_MODE_A)
612 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
613 } else if (mac->opmode == NL80211_IFTYPE_AP ||
614 mac->opmode == NL80211_IFTYPE_ADHOC) {
615 if (NULL != sta) {
616 if (sta->aid > 0)
617 tcb_desc->mac_id = sta->aid + 1;
618 else
619 tcb_desc->mac_id = 1;
620 } else {
621 tcb_desc->mac_id = 0;
622 }
623 }
624 }
625
626 }
627
628 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
629 struct ieee80211_sta *sta,
630 struct rtl_tcb_desc *tcb_desc)
631 {
632 struct rtl_priv *rtlpriv = rtl_priv(hw);
633 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
634
635 tcb_desc->packet_bw = false;
636 if (!sta)
637 return;
638 if (mac->opmode == NL80211_IFTYPE_AP ||
639 mac->opmode == NL80211_IFTYPE_ADHOC) {
640 if (!(sta->ht_cap.ht_supported) ||
641 !(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
642 return;
643 } else if (mac->opmode == NL80211_IFTYPE_STATION) {
644 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
645 return;
646 }
647 if (tcb_desc->multicast || tcb_desc->broadcast)
648 return;
649
650 /*use legency rate, shall use 20MHz */
651 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
652 return;
653
654 tcb_desc->packet_bw = true;
655 }
656
657 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
658 {
659 struct rtl_priv *rtlpriv = rtl_priv(hw);
660 struct rtl_phy *rtlphy = &(rtlpriv->phy);
661 u8 hw_rate;
662
663 if (get_rf_type(rtlphy) == RF_2T2R)
664 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
665 else
666 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
667
668 return hw_rate;
669 }
670
671 /* mac80211's rate_idx is like this:
672 *
673 * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
674 *
675 * B/G rate:
676 * (rx_status->flag & RX_FLAG_HT) = 0,
677 * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
678 *
679 * N rate:
680 * (rx_status->flag & RX_FLAG_HT) = 1,
681 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
682 *
683 * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
684 * A rate:
685 * (rx_status->flag & RX_FLAG_HT) = 0,
686 * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
687 *
688 * N rate:
689 * (rx_status->flag & RX_FLAG_HT) = 1,
690 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
691 */
692 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
693 bool isht, u8 desc_rate, bool first_ampdu)
694 {
695 int rate_idx;
696
697 if (false == isht) {
698 if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
699 switch (desc_rate) {
700 case DESC92_RATE1M:
701 rate_idx = 0;
702 break;
703 case DESC92_RATE2M:
704 rate_idx = 1;
705 break;
706 case DESC92_RATE5_5M:
707 rate_idx = 2;
708 break;
709 case DESC92_RATE11M:
710 rate_idx = 3;
711 break;
712 case DESC92_RATE6M:
713 rate_idx = 4;
714 break;
715 case DESC92_RATE9M:
716 rate_idx = 5;
717 break;
718 case DESC92_RATE12M:
719 rate_idx = 6;
720 break;
721 case DESC92_RATE18M:
722 rate_idx = 7;
723 break;
724 case DESC92_RATE24M:
725 rate_idx = 8;
726 break;
727 case DESC92_RATE36M:
728 rate_idx = 9;
729 break;
730 case DESC92_RATE48M:
731 rate_idx = 10;
732 break;
733 case DESC92_RATE54M:
734 rate_idx = 11;
735 break;
736 default:
737 rate_idx = 0;
738 break;
739 }
740 } else {
741 switch (desc_rate) {
742 case DESC92_RATE6M:
743 rate_idx = 0;
744 break;
745 case DESC92_RATE9M:
746 rate_idx = 1;
747 break;
748 case DESC92_RATE12M:
749 rate_idx = 2;
750 break;
751 case DESC92_RATE18M:
752 rate_idx = 3;
753 break;
754 case DESC92_RATE24M:
755 rate_idx = 4;
756 break;
757 case DESC92_RATE36M:
758 rate_idx = 5;
759 break;
760 case DESC92_RATE48M:
761 rate_idx = 6;
762 break;
763 case DESC92_RATE54M:
764 rate_idx = 7;
765 break;
766 default:
767 rate_idx = 0;
768 break;
769 }
770 }
771
772 } else {
773
774 switch (desc_rate) {
775 case DESC92_RATEMCS0:
776 rate_idx = 0;
777 break;
778 case DESC92_RATEMCS1:
779 rate_idx = 1;
780 break;
781 case DESC92_RATEMCS2:
782 rate_idx = 2;
783 break;
784 case DESC92_RATEMCS3:
785 rate_idx = 3;
786 break;
787 case DESC92_RATEMCS4:
788 rate_idx = 4;
789 break;
790 case DESC92_RATEMCS5:
791 rate_idx = 5;
792 break;
793 case DESC92_RATEMCS6:
794 rate_idx = 6;
795 break;
796 case DESC92_RATEMCS7:
797 rate_idx = 7;
798 break;
799 case DESC92_RATEMCS8:
800 rate_idx = 8;
801 break;
802 case DESC92_RATEMCS9:
803 rate_idx = 9;
804 break;
805 case DESC92_RATEMCS10:
806 rate_idx = 10;
807 break;
808 case DESC92_RATEMCS11:
809 rate_idx = 11;
810 break;
811 case DESC92_RATEMCS12:
812 rate_idx = 12;
813 break;
814 case DESC92_RATEMCS13:
815 rate_idx = 13;
816 break;
817 case DESC92_RATEMCS14:
818 rate_idx = 14;
819 break;
820 case DESC92_RATEMCS15:
821 rate_idx = 15;
822 break;
823 default:
824 rate_idx = 0;
825 break;
826 }
827 }
828 return rate_idx;
829 }
830 EXPORT_SYMBOL(rtlwifi_rate_mapping);
831
832 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
833 struct ieee80211_tx_info *info,
834 struct ieee80211_sta *sta,
835 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
836 {
837 struct rtl_priv *rtlpriv = rtl_priv(hw);
838 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
839 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
840 struct ieee80211_rate *txrate;
841 __le16 fc = hdr->frame_control;
842
843 txrate = ieee80211_get_tx_rate(hw, info);
844 tcb_desc->hw_rate = txrate->hw_value;
845
846 if (ieee80211_is_data(fc)) {
847 /*
848 *we set data rate INX 0
849 *in rtl_rc.c if skb is special data or
850 *mgt which need low data rate.
851 */
852
853 /*
854 *So tcb_desc->hw_rate is just used for
855 *special data and mgt frames
856 */
857 if (info->control.rates[0].idx == 0 ||
858 ieee80211_is_nullfunc(fc)) {
859 tcb_desc->use_driver_rate = true;
860 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
861
862 tcb_desc->disable_ratefallback = 1;
863 } else {
864 /*
865 *because hw will nerver use hw_rate
866 *when tcb_desc->use_driver_rate = false
867 *so we never set highest N rate here,
868 *and N rate will all be controlled by FW
869 *when tcb_desc->use_driver_rate = false
870 */
871 if (sta && (sta->ht_cap.ht_supported)) {
872 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
873 } else {
874 if (rtlmac->mode == WIRELESS_MODE_B) {
875 tcb_desc->hw_rate =
876 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
877 } else {
878 tcb_desc->hw_rate =
879 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
880 }
881 }
882 }
883
884 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
885 tcb_desc->multicast = 1;
886 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
887 tcb_desc->broadcast = 1;
888
889 _rtl_txrate_selectmode(hw, sta, tcb_desc);
890 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
891 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
892 _rtl_query_shortgi(hw, sta, tcb_desc, info);
893 _rtl_query_protection_mode(hw, tcb_desc, info);
894 } else {
895 tcb_desc->use_driver_rate = true;
896 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
897 tcb_desc->disable_ratefallback = 1;
898 tcb_desc->mac_id = 0;
899 tcb_desc->packet_bw = false;
900 }
901 }
902 EXPORT_SYMBOL(rtl_get_tcb_desc);
903
904 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
905 {
906 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
907 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
908 struct rtl_priv *rtlpriv = rtl_priv(hw);
909 __le16 fc = hdr->frame_control;
910 u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
911 u8 category;
912
913 if (!ieee80211_is_action(fc))
914 return true;
915
916 category = *act;
917 act++;
918 switch (category) {
919 case ACT_CAT_BA:
920 switch (*act) {
921 case ACT_ADDBAREQ:
922 if (mac->act_scanning)
923 return false;
924
925 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
926 ("%s ACT_ADDBAREQ From :%pM\n",
927 is_tx ? "Tx" : "Rx", hdr->addr2));
928 break;
929 case ACT_ADDBARSP:
930 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
931 ("%s ACT_ADDBARSP From :%pM\n",
932 is_tx ? "Tx" : "Rx", hdr->addr2));
933 break;
934 case ACT_DELBA:
935 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
936 ("ACT_ADDBADEL From :%pM\n", hdr->addr2));
937 break;
938 }
939 break;
940 default:
941 break;
942 }
943
944 return true;
945 }
946
947 /*should call before software enc*/
948 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
949 {
950 struct rtl_priv *rtlpriv = rtl_priv(hw);
951 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
952 __le16 fc = rtl_get_fc(skb);
953 u16 ether_type;
954 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
955 const struct iphdr *ip;
956
957 if (!ieee80211_is_data(fc))
958 return false;
959
960
961 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
962 SNAP_SIZE + PROTOC_TYPE_SIZE);
963 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
964 /* ether_type = ntohs(ether_type); */
965
966 if (ETH_P_IP == ether_type) {
967 if (IPPROTO_UDP == ip->protocol) {
968 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
969 (ip->ihl << 2));
970 if (((((u8 *) udp)[1] == 68) &&
971 (((u8 *) udp)[3] == 67)) ||
972 ((((u8 *) udp)[1] == 67) &&
973 (((u8 *) udp)[3] == 68))) {
974 /*
975 * 68 : UDP BOOTP client
976 * 67 : UDP BOOTP server
977 */
978 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
979 DBG_DMESG, ("dhcp %s !!\n",
980 (is_tx) ? "Tx" : "Rx"));
981
982 if (is_tx) {
983 rtl_lps_leave(hw);
984 ppsc->last_delaylps_stamp_jiffies =
985 jiffies;
986 }
987
988 return true;
989 }
990 }
991 } else if (ETH_P_ARP == ether_type) {
992 if (is_tx) {
993 rtl_lps_leave(hw);
994 ppsc->last_delaylps_stamp_jiffies = jiffies;
995 }
996
997 return true;
998 } else if (ETH_P_PAE == ether_type) {
999 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1000 ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
1001
1002 if (is_tx) {
1003 rtl_lps_leave(hw);
1004 ppsc->last_delaylps_stamp_jiffies = jiffies;
1005 }
1006
1007 return true;
1008 } else if (ETH_P_IPV6 == ether_type) {
1009 /* IPv6 */
1010 return true;
1011 }
1012
1013 return false;
1014 }
1015
1016 /*********************************************************
1017 *
1018 * functions called by core.c
1019 *
1020 *********************************************************/
1021 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1022 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1023 {
1024 struct rtl_priv *rtlpriv = rtl_priv(hw);
1025 struct rtl_tid_data *tid_data;
1026 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1027 struct rtl_sta_info *sta_entry = NULL;
1028
1029 if (sta == NULL)
1030 return -EINVAL;
1031
1032 if (unlikely(tid >= MAX_TID_COUNT))
1033 return -EINVAL;
1034
1035 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1036 if (!sta_entry)
1037 return -ENXIO;
1038 tid_data = &sta_entry->tids[tid];
1039
1040 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1041 ("on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
1042 tid_data->seq_number));
1043
1044 *ssn = tid_data->seq_number;
1045 tid_data->agg.agg_state = RTL_AGG_START;
1046
1047 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1048
1049 return 0;
1050 }
1051
1052 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1053 struct ieee80211_sta *sta, u16 tid)
1054 {
1055 struct rtl_priv *rtlpriv = rtl_priv(hw);
1056 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1057 struct rtl_sta_info *sta_entry = NULL;
1058
1059 if (sta == NULL)
1060 return -EINVAL;
1061
1062 if (!sta->addr) {
1063 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
1064 return -EINVAL;
1065 }
1066
1067 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1068 ("on ra = %pM tid = %d\n", sta->addr, tid));
1069
1070 if (unlikely(tid >= MAX_TID_COUNT))
1071 return -EINVAL;
1072
1073 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1074 sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1075
1076 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1077
1078 return 0;
1079 }
1080
1081 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1082 struct ieee80211_sta *sta, u16 tid)
1083 {
1084 struct rtl_priv *rtlpriv = rtl_priv(hw);
1085 struct rtl_sta_info *sta_entry = NULL;
1086
1087 if (sta == NULL)
1088 return -EINVAL;
1089
1090 if (!sta->addr) {
1091 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
1092 return -EINVAL;
1093 }
1094
1095 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1096 ("on ra = %pM tid = %d\n", sta->addr, tid));
1097
1098 if (unlikely(tid >= MAX_TID_COUNT))
1099 return -EINVAL;
1100
1101 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1102 sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1103
1104 return 0;
1105 }
1106
1107 /*********************************************************
1108 *
1109 * wq & timer callback functions
1110 *
1111 *********************************************************/
1112 void rtl_watchdog_wq_callback(void *data)
1113 {
1114 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1115 struct rtl_works,
1116 watchdog_wq);
1117 struct ieee80211_hw *hw = rtlworks->hw;
1118 struct rtl_priv *rtlpriv = rtl_priv(hw);
1119 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1120 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1121 bool busytraffic = false;
1122 bool higher_busytraffic = false;
1123 bool higher_busyrxtraffic = false;
1124 u8 idx, tid;
1125 u32 rx_cnt_inp4eriod = 0;
1126 u32 tx_cnt_inp4eriod = 0;
1127 u32 aver_rx_cnt_inperiod = 0;
1128 u32 aver_tx_cnt_inperiod = 0;
1129 u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1130 u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1131 bool enter_ps = false;
1132
1133 if (is_hal_stop(rtlhal))
1134 return;
1135
1136 /* <1> Determine if action frame is allowed */
1137 if (mac->link_state > MAC80211_NOLINK) {
1138 if (mac->cnt_after_linked < 20)
1139 mac->cnt_after_linked++;
1140 } else {
1141 mac->cnt_after_linked = 0;
1142 }
1143
1144 /*
1145 *<2> to check if traffic busy, if
1146 * busytraffic we don't change channel
1147 */
1148 if (mac->link_state >= MAC80211_LINKED) {
1149
1150 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1151 for (idx = 0; idx <= 2; idx++) {
1152 rtlpriv->link_info.num_rx_in4period[idx] =
1153 rtlpriv->link_info.num_rx_in4period[idx + 1];
1154 rtlpriv->link_info.num_tx_in4period[idx] =
1155 rtlpriv->link_info.num_tx_in4period[idx + 1];
1156 }
1157 rtlpriv->link_info.num_rx_in4period[3] =
1158 rtlpriv->link_info.num_rx_inperiod;
1159 rtlpriv->link_info.num_tx_in4period[3] =
1160 rtlpriv->link_info.num_tx_inperiod;
1161 for (idx = 0; idx <= 3; idx++) {
1162 rx_cnt_inp4eriod +=
1163 rtlpriv->link_info.num_rx_in4period[idx];
1164 tx_cnt_inp4eriod +=
1165 rtlpriv->link_info.num_tx_in4period[idx];
1166 }
1167 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1168 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1169
1170 /* (2) check traffic busy */
1171 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
1172 busytraffic = true;
1173
1174 /* Higher Tx/Rx data. */
1175 if (aver_rx_cnt_inperiod > 4000 ||
1176 aver_tx_cnt_inperiod > 4000) {
1177 higher_busytraffic = true;
1178
1179 /* Extremely high Rx data. */
1180 if (aver_rx_cnt_inperiod > 5000)
1181 higher_busyrxtraffic = true;
1182 }
1183
1184 /* check every tid's tx traffic */
1185 for (tid = 0; tid <= 7; tid++) {
1186 for (idx = 0; idx <= 2; idx++)
1187 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1188 rtlpriv->link_info.tidtx_in4period[tid]
1189 [idx + 1];
1190 rtlpriv->link_info.tidtx_in4period[tid][3] =
1191 rtlpriv->link_info.tidtx_inperiod[tid];
1192
1193 for (idx = 0; idx <= 3; idx++)
1194 tidtx_inp4eriod[tid] +=
1195 rtlpriv->link_info.tidtx_in4period[tid][idx];
1196 aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1197 if (aver_tidtx_inperiod[tid] > 5000)
1198 rtlpriv->link_info.higher_busytxtraffic[tid] =
1199 true;
1200 else
1201 rtlpriv->link_info.higher_busytxtraffic[tid] =
1202 false;
1203 }
1204
1205 if (((rtlpriv->link_info.num_rx_inperiod +
1206 rtlpriv->link_info.num_tx_inperiod) > 8) ||
1207 (rtlpriv->link_info.num_rx_inperiod > 2))
1208 enter_ps = false;
1209 else
1210 enter_ps = true;
1211
1212 /* LeisurePS only work in infra mode. */
1213 if (enter_ps)
1214 rtl_lps_enter(hw);
1215 else
1216 rtl_lps_leave(hw);
1217 }
1218
1219 rtlpriv->link_info.num_rx_inperiod = 0;
1220 rtlpriv->link_info.num_tx_inperiod = 0;
1221 for (tid = 0; tid <= 7; tid++)
1222 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1223
1224 rtlpriv->link_info.busytraffic = busytraffic;
1225 rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1226 rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1227
1228 /* <3> DM */
1229 rtlpriv->cfg->ops->dm_watchdog(hw);
1230 }
1231
1232 void rtl_watch_dog_timer_callback(unsigned long data)
1233 {
1234 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1235 struct rtl_priv *rtlpriv = rtl_priv(hw);
1236
1237 queue_delayed_work(rtlpriv->works.rtl_wq,
1238 &rtlpriv->works.watchdog_wq, 0);
1239
1240 mod_timer(&rtlpriv->works.watchdog_timer,
1241 jiffies + MSECS(RTL_WATCH_DOG_TIME));
1242 }
1243
1244 /*********************************************************
1245 *
1246 * frame process functions
1247 *
1248 *********************************************************/
1249 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1250 {
1251 struct ieee80211_mgmt *mgmt = (void *)data;
1252 u8 *pos, *end;
1253
1254 pos = (u8 *)mgmt->u.beacon.variable;
1255 end = data + len;
1256 while (pos < end) {
1257 if (pos + 2 + pos[1] > end)
1258 return NULL;
1259
1260 if (pos[0] == ie)
1261 return pos;
1262
1263 pos += 2 + pos[1];
1264 }
1265 return NULL;
1266 }
1267
1268 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1269 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1270 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1271 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1272 {
1273 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1274 struct sk_buff *skb;
1275 struct ieee80211_mgmt *action_frame;
1276
1277 /* 27 = header + category + action + smps mode */
1278 skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1279 if (!skb)
1280 return NULL;
1281
1282 skb_reserve(skb, hw->extra_tx_headroom);
1283 action_frame = (void *)skb_put(skb, 27);
1284 memset(action_frame, 0, 27);
1285 memcpy(action_frame->da, da, ETH_ALEN);
1286 memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1287 memcpy(action_frame->bssid, bssid, ETH_ALEN);
1288 action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1289 IEEE80211_STYPE_ACTION);
1290 action_frame->u.action.category = WLAN_CATEGORY_HT;
1291 action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1292 switch (smps) {
1293 case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1294 case IEEE80211_SMPS_NUM_MODES:/* 4 */
1295 WARN_ON(1);
1296 case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1297 action_frame->u.action.u.ht_smps.smps_control =
1298 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1299 break;
1300 case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1301 action_frame->u.action.u.ht_smps.smps_control =
1302 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1303 break;
1304 case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1305 action_frame->u.action.u.ht_smps.smps_control =
1306 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1307 break;
1308 }
1309
1310 return skb;
1311 }
1312
1313 int rtl_send_smps_action(struct ieee80211_hw *hw,
1314 struct ieee80211_sta *sta, u8 *da, u8 *bssid,
1315 enum ieee80211_smps_mode smps)
1316 {
1317 struct rtl_priv *rtlpriv = rtl_priv(hw);
1318 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1319 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1320 struct sk_buff *skb = rtl_make_smps_action(hw, smps, da, bssid);
1321 struct rtl_tcb_desc tcb_desc;
1322 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1323
1324 if (rtlpriv->mac80211.act_scanning)
1325 goto err_free;
1326
1327 if (!sta)
1328 goto err_free;
1329
1330 if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1331 goto err_free;
1332
1333 if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1334 goto err_free;
1335
1336 /* this is a type = mgmt * stype = action frame */
1337 if (skb) {
1338 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1339 struct rtl_sta_info *sta_entry =
1340 (struct rtl_sta_info *) sta->drv_priv;
1341 sta_entry->mimo_ps = smps;
1342 rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
1343
1344 info->control.rates[0].idx = 0;
1345 info->control.sta = sta;
1346 info->band = hw->conf.channel->band;
1347 rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
1348 }
1349 err_free:
1350 return 0;
1351 }
1352
1353 /*********************************************************
1354 *
1355 * IOT functions
1356 *
1357 *********************************************************/
1358 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1359 struct octet_string vendor_ie)
1360 {
1361 struct rtl_priv *rtlpriv = rtl_priv(hw);
1362 bool matched = false;
1363 static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1364 static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1365 static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1366 static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1367 static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1368 static u8 racap[] = { 0x00, 0x0c, 0x43 };
1369 static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1370 static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1371
1372 if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1373 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1374 rtlpriv->mac80211.vendor = PEER_ATH;
1375 matched = true;
1376 } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1377 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1378 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1379 rtlpriv->mac80211.vendor = PEER_BROAD;
1380 matched = true;
1381 } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1382 rtlpriv->mac80211.vendor = PEER_RAL;
1383 matched = true;
1384 } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1385 rtlpriv->mac80211.vendor = PEER_CISCO;
1386 matched = true;
1387 } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1388 rtlpriv->mac80211.vendor = PEER_MARV;
1389 matched = true;
1390 }
1391
1392 return matched;
1393 }
1394
1395 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1396 unsigned int len)
1397 {
1398 struct ieee80211_mgmt *mgmt = (void *)data;
1399 struct octet_string vendor_ie;
1400 u8 *pos, *end;
1401
1402 pos = (u8 *)mgmt->u.beacon.variable;
1403 end = data + len;
1404 while (pos < end) {
1405 if (pos[0] == 221) {
1406 vendor_ie.length = pos[1];
1407 vendor_ie.octet = &pos[2];
1408 if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1409 return true;
1410 }
1411
1412 if (pos + 2 + pos[1] > end)
1413 return false;
1414
1415 pos += 2 + pos[1];
1416 }
1417 return false;
1418 }
1419
1420 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1421 {
1422 struct rtl_priv *rtlpriv = rtl_priv(hw);
1423 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1424 struct ieee80211_hdr *hdr = (void *)data;
1425 u32 vendor = PEER_UNKNOWN;
1426
1427 static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1428 static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1429 static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1430 static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1431 static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1432 static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1433 static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1434 static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1435 static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1436 static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1437 static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1438 static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1439 static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1440 static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1441 static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1442 static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1443
1444 if (mac->opmode != NL80211_IFTYPE_STATION)
1445 return;
1446
1447 if (mac->link_state == MAC80211_NOLINK) {
1448 mac->vendor = PEER_UNKNOWN;
1449 return;
1450 }
1451
1452 if (mac->cnt_after_linked > 2)
1453 return;
1454
1455 /* check if this really is a beacon */
1456 if (!ieee80211_is_beacon(hdr->frame_control))
1457 return;
1458
1459 /* min. beacon length + FCS_LEN */
1460 if (len <= 40 + FCS_LEN)
1461 return;
1462
1463 /* and only beacons from the associated BSSID, please */
1464 if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
1465 return;
1466
1467 if (rtl_find_221_ie(hw, data, len))
1468 vendor = mac->vendor;
1469
1470 if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1471 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1472 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1473 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1474 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1475 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1476 vendor == PEER_ATH) {
1477 vendor = PEER_ATH;
1478 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ath find\n"));
1479 } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1480 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1481 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1482 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1483 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1484 vendor == PEER_RAL) {
1485 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>ral findn\n"));
1486 vendor = PEER_RAL;
1487 } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1488 vendor == PEER_CISCO) {
1489 vendor = PEER_CISCO;
1490 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>cisco find\n"));
1491 } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1492 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1493 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1494 vendor == PEER_BROAD) {
1495 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>broad find\n"));
1496 vendor = PEER_BROAD;
1497 } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1498 vendor == PEER_MARV) {
1499 vendor = PEER_MARV;
1500 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, ("=>marv find\n"));
1501 }
1502
1503 mac->vendor = vendor;
1504 }
1505
1506 /*********************************************************
1507 *
1508 * sysfs functions
1509 *
1510 *********************************************************/
1511 static ssize_t rtl_show_debug_level(struct device *d,
1512 struct device_attribute *attr, char *buf)
1513 {
1514 struct ieee80211_hw *hw = dev_get_drvdata(d);
1515 struct rtl_priv *rtlpriv = rtl_priv(hw);
1516
1517 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1518 }
1519
1520 static ssize_t rtl_store_debug_level(struct device *d,
1521 struct device_attribute *attr,
1522 const char *buf, size_t count)
1523 {
1524 struct ieee80211_hw *hw = dev_get_drvdata(d);
1525 struct rtl_priv *rtlpriv = rtl_priv(hw);
1526 unsigned long val;
1527 int ret;
1528
1529 ret = strict_strtoul(buf, 0, &val);
1530 if (ret) {
1531 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1532 } else {
1533 rtlpriv->dbg.global_debuglevel = val;
1534 printk(KERN_DEBUG "debuglevel:%x\n",
1535 rtlpriv->dbg.global_debuglevel);
1536 }
1537
1538 return strnlen(buf, count);
1539 }
1540
1541 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1542 rtl_show_debug_level, rtl_store_debug_level);
1543
1544 static struct attribute *rtl_sysfs_entries[] = {
1545
1546 &dev_attr_debug_level.attr,
1547
1548 NULL
1549 };
1550
1551 /*
1552 * "name" is folder name witch will be
1553 * put in device directory like :
1554 * sys/devices/pci0000:00/0000:00:1c.4/
1555 * 0000:06:00.0/rtl_sysfs
1556 */
1557 struct attribute_group rtl_attribute_group = {
1558 .name = "rtlsysfs",
1559 .attrs = rtl_sysfs_entries,
1560 };
1561
1562 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
1563 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
1564 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
1565 MODULE_LICENSE("GPL");
1566 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1567
1568 static int __init rtl_core_module_init(void)
1569 {
1570 if (rtl_rate_control_register())
1571 pr_err("Unable to register rtl_rc, use default RC !!\n");
1572
1573 return 0;
1574 }
1575
1576 static void __exit rtl_core_module_exit(void)
1577 {
1578 /*RC*/
1579 rtl_rate_control_unregister();
1580 }
1581
1582 module_init(rtl_core_module_init);
1583 module_exit(rtl_core_module_exit);